baber/WOPTO huggingface dataset:
Patent GB-1317376-A (GB)
Title: Rotor for axial flow turbine
IPC: F01D5/30
Filed: 1971-04-20
Abstract: 1317376 Turbine rotors WESTINGHOUSE ELECTRIC CORP 20 April 1971 [18 May 1970] 10056/71 Heading FIT A rotor for an axial flow turbine includes a disc 5 having the roots 7 of blades 8 mounted in slots 6 extending across the disc periphery and a side plate 13 mounted in abutment with the upstream faces of the roots 7 to direct cooling air to a passage 19 below each root, means 21, 22 being provided at the downstream faces of the roots so as to lock the latter axially in position and prevent leakage of cooling air from passages 19. The air flows from the latter to passages in blades 8 through holes 17 in roots 7. The leakage preventing and locking means comprises arcuate segments 21 of L-shaped cross-section disposed in a circumferential groove 23 in discs 5 and engaging ledges 26 in roots 7, the segments 21 being supported by segments 22 each of slightly less angular extent engaging within the L-section of the corresponding segment 21. Segments 21, 22 are held in position by lock screws 24 each screwed into a hole in lip 25 of groove 23 so as to engage holes (21a, 22a, Fig.3, not shown) in the segments. Lockwashers 27 are provided for screws 24. Segments 21 are urged into tight engagement with ledges 26 by set screws 29 screwed into segments 22 so as to bear on segments 21, recesses 33 being provided in lip 25 for access to screws 29. The gaps between adjacent blade stems are sealed on the downstream side by plates 36 each located between a groove 39 in blade platform 10 and a ledge 37 integral with root 7. The radially extending edges of plates 36 have lips 41, 42 so that adjacent plates interfit, alternate plates being reversed as shown in Fig.2. Each plate 36 has a locating tab 43 co-operating with associated ledge 37.
Patent GB-792786-A (GB)
Title: Improvements in or relating to the manufacture of grids for electric discharge tubes
IPC: B21F27/12
Filed: 1956-04-03
Abstract: 792,786. Making grids for thermionic valves; angular bending. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 3, 1956 [April 6, 1955], No. 10133/56. Classes 83 (2) and 83 (4). A cage-shaped grid, for a thermionic valve, comprising U-shaped parallel wires 14, 15, Fig. 5, arranged crosswise at their lower end, Fig. 4 (not shown), and secured within an opening of a flexible annular support 9, is made by placing two perpendicular groups of parallel wires 14, 15, Fig. 3, of predetermined length in grooves 6, 7 formed in one surface of an annular die 4, 5, 8 whereby the wires lie crosswise over the opening in the die, locating the support 9, Fig. 2, against the opposite surface of the die with their openings in alignment, pressing a cylindrical die 1 through the openings in the matrix and support, against the action of a counter die 12, to bend the wires to U-shape and press them through the support until their free ends are level therewith and securing the free ends to the support. The support 9 is held against the die part 8 by a spring-loaded sleeve 10 and the counter die 12 is loaded by a spring 13. The die 1 has longitudinal grooves in its cylindrical surface of slightly less depth than the thickness of the grid wires; these grooves extend across the lower end of the die, Fig. 1 (not shown). The grid wires are preferably secured to the support 9 by welding in which case the die 1 may serve as a welding electrode; the crossing wires at the lower end of the cage, Fig. 5, may also be welded together. The wires may be drawn from reels into the matrix grooves 6, 7 and be cut off at the outer edge of die part 4 by means of a cutting edge.
Patent GB-758558-A (GB)
Title: An improved multi-pole circuit breaker, more particularly for electric motors
IPC: H01H73/30
Filed: 1954-04-09
Abstract: 758,558. Automatic circuit breakers. ELLENBERGER & POENSGEN GES. April 9, 1954 [April 21, 1953], No. 10465/54. Class 38(5) A multi-pole cirucuit-breaker comprises an insulating base 1 carrying fixed clip contacts 3 and bimetal strips 4 with heaters 6, a contact 3 and bimetal strip being associated with each pole, and those of adjacent poles being located at 180 degrees with respect to each other. Above the base is an 'insulating member 7 carrying L-shaped bridging contacts 12, the vertical portions 13 of which engage the contacts 3 when member 7 is pressed downwards against springs 15 by, a spring- loaded button 16. Member 7 is retained in the switch-closed position by locking lugs 8 on the bimetal strips, Fig. 6, which during said movement of member 7 are deflected by cam faces 24 so that they hook over the horizontal portions of contacts 12 and also complete the connections therethrough. The free ends 9 of the bimetal strips project through holes in a slidable plate 10 which is engagable bv a slide 20 mounted in the circuit-breaker casing. The breaker may thus be opened by deflection of -the bimetal strips to release lugs 8 either by the heaters 6 or manually by the slide 20. Reference has been directed by the Comptroller to Specification 709,114.
Patent GB-914236-A (GB)
Title: Improvements in or relating to compressed-air feeding apparatus for dental handpieces
IPC: A61C1/00
Filed: 1961-03-22
Abstract: In a dental drill having a turbine driven by compressed-air, provision is made for maintaining a positive pressure within the turbine casing during the time that the rotor is slowing down, in order to prevent dust being drawn into the bearings.  This may be achieved either by the provision of an air storage container, connected upstream of the turbine, or of a valve which closes the exhaust duct.  In the latter case the valve may be actuated electromagnetically, by a spring or weight loading or by a diaphragm actuated by the supply pressure.
Patent GB-527317-A (GB)
Title: Manufacture of thiolactams
IPC: C07D223/06
Filed: 1939-04-04
Abstract: 527,317. Thiolactams. IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 4, 1939, No. 10536. Convention date, April 4, 1938. [Class 2 (iii)] Thiolactams are manufactured by reacting H 2 S with a primary monoaminomononitrile in which the amino group is attached to a carbon atom bearing at least one hydrogen atom and is separated from the nitrile group by a chain of 3 to 5 carbon atoms, not more than 2 of which (if the chain is closed) are atoms of the same ring, said chain being free from acetylenic or allenic unsaturation. The aminonitrile as a whole may be aliphatic, alicyclic, aromatic or heterocyclic, and saturated or unsaturated. If unsaturated the unsaturation may be in a ring or open chain and may be ethylenic, dienic or (subject to above exception) acetylenic or allenic. Other substituents, e.g., chlorine, bromine, mercapto, hydroxyl, may be present. Primary monoaminomononitriles of formula H 2 N-R-CN, where R is an acyclic hydrocarbon radical free from acetylenic and allenic unsaturation and having a chain of 3 to 5 carbon atoms between the amino and cyano groups, the carbon attached to the amino group bearing at least one hydrogen atom, are preferred. The reaction may be carried out in presence of a liquid diluent, e.g., n-butyl alcohol, the amyl alcohols, dioxan, toluene, xylene, benzene, #-methoxy-ethanol, ethyl alcohol, diethyl alcohol or chlorobenzene, which is inert to reactants and products and is a solvent for the reactants, or for reactants and products. In examples : (1) a mixture of 6-aminocapronitrile and ethyl alcohol is saturated with H 2 S and heated under pressure ; (2) H 2 S is passed into 6-aminocapronitrile while heating. Other aminonitriles mentioned are o-cyanobenzylamine, 4 - amino - butyronitrile, 4 amino - capronitrile, 4 - aminolauronitrile, 4 - aminostearonitrile, 5 - amino - valeronitrile, 5 - aminocapronitrile, 5 - aminolauronitrile, 5 - aminostearonitrile, 6 - aminolauronitrile, 6 - aminostearonitrile, 2 - chloro - 4 - aminobutyronitrile, 3 - chloro - 5 - aminovaleronitrile, 3 - hydroxy - 5 - aminocapronitrile, 3 : 4 - dibromo - 6 - aminocapronitrile, 2 - methyl - 4 - aminobutyronitrile, 3 - ethyl - 5 - aminovaleronitrile, 4 - isopropyl - 6 - aminocapronitrile, 2 - chloro - 3 - hydroxy - 4 - methyl - 5 - aminocapronitrile, 5 - amino - 3 - pentenonitrile, 5 - amino - 2 - pentenonitrile, 5 - amino - 2 : 4 - pentadienonitrile, o - (2 - aminoethyl) - hexahydrobenzonitrile, 2 - aminomethyleyclohexylacetonitrile, 3 - (2 - aminocyclohexyl) - propionitrile, o - (2 - aminoethyl) - benzonitrile, o - aminomethylphenyl - acetonitrile, 2 - aminomethyl - 1 - napthyl - acetonitrile, 8 - aminomethyl - 1 - naphthonitrile, and 3 - (2 - aminoethyl) furonitrile.
Patent GB-270676-A (GB)
Title: Improvements in or relating to address printing plates
IPC: B41L47/14
Filed: 1927-04-20
Abstract: 270,676. American Multigraph Co., (Assignees of Osborn., H. C.). May 5, 1926, Printing surfaces; holders for loose types and type-bars.-An address-plate comprises a metal plate 10 shaped like an inverted trough and provided with rows of overhanging projections 17, 18, whereby embossed printing-strips 20 may be mounted on the plate, the strips 20 being slid endwise into position and having side flanges which grip the projections. The plate may be flat, or it may be arcuate in form so that it may be mounted on the printing-drum of a rotary office printing-machine or used in a platen machine having a convex support and concave platen. The side edges of the plate are bent outwardly and curled inwardly as shown to provide beadings 13 adapted to fit in grooves in the plate-support. Index tabs may be mounted on the plate, consisting, as shown in Fig. 7, of a piece of paper 33 stuck on a metal plate 30 having flanges 31 adapted to engage the projections 17, 18; or, as shown in Fig. 5, comprising a plate 40 having similar flanges 41, lips 43 - - 46 to grip an information card 50, and a stop 48 to limit the inward movement of the plate 40 so that the card will be beyond the end of the plate 10 and be visible when the plates are stacked in a tiling-box.
Patent GB-331584-A (GB)
Title: Improvements in the manufacture of cement
IPC: C04B7/47
Filed: 1929-04-06
Abstract: 331,584. British Portland Cement Manufacturers, Ltd., Panisset, S. G. S., and Hannah, W. S. April 6, 1929. Drawings to Specification. Cements, Portland and Roman, materials, processes, and apparatus for making.-White Portland cement is produced by treating the raw materials with a reducing agent immediately after the calcination process, after which the clinker is rapidly cooled to prevent reoxidation. The reduction may be effected by a spray of a reducing powder, e.g. coal dust or by causing the red hot clinker to fall on a surface covered with a volatile reducing agent, e.g. paraffin oil. Cooling is effected by immersion in a trough of water, from which the clinker is removed by a conveyer while still warm enough to drive off moisture. According to the Provisional Specification the reduction may be effected during calcination.
Patent GB-1495915-A (GB)
Title: Control system for an integral spring-loaded parking and service brake
IPC: B60T13/58
Filed: 1976-03-17
Abstract: 1495915 Spring - loaded vehicle brakes CATERPILLAR TRACTOR CO 17 March 1976 [18 Aug 1975] 10778/76 Heading F2F Vehicle brakes 10 are biased on by springs 12 and held off by hydraulic pressure in line 35 connected to a three-position valve 19. Normally the valve is centralized (as shown) by springs 20, 21 and pressure is maintained in the line 35 by a first pressure circuit, e.g. an hydraulic pump 13. If the first circuit fails, a second pressure circuit is brought into operation. This consists of a compressed air reservoir 26 acting through lines 57, 62, 63 and valve 54 to pressurize an hydraulic master cylinder 27, which then transmits pressure through line 29. On failure of the first circuit, valve 18 is moved upwards to vent the first circuit to an oil tank 48 and valve 34 is moved to the left to connect the lines 62, 63. Air pressure is then applied to the cylinder 21 to move the threeway valve 19 to the left, connecting the master cylinder 27 by line 29 to the line 35. The third position of the three-way valve 19 (to the right) results from movement of the parking brake valve 30 to the left. This applies air pressure by lines 57, 58 to the cylinder 20, releasing the pressure in line 35 to the oil tank 48. Operation of the foot brake 36 results in air pressure being applied through lines 39, 40 to the master cylinder 41, and hence in hydraulic pressure being applied through line 43 and valve 44 to supplement the springs 12 to apply the brakes against the pressure of the hydraulic fluid in line 35. A retard brake 50 operates in a similar way to the foot brake, but through a master cylinder 27, and the three-way valve 19 and valve 44.
Patent GB-1154283-A (GB)
Title: Griseofulvin Composition
Inventor: FLORESTANO HERBERT JOSEPH
Filed: 1968-03-06
Abstract: 1,154,283. Griseofulrin compositions. DOW CHEMICAL CO. 6 March, 1968, No. 10884/68. Heading A5B. A composition contains at least 0.05% by weight of griseofulrin in admixture with a vehicle which comprises at least 50% by weight of one or more fatty acid diesters of polyethylene glycol wherein the fatty acid contains 12-18 carbon atoms and the polyethylene glycol has a molecular weight of from 200 to 600. A known pharmaceutical carrier may also be present.
Patent GB-708438-A (GB)
Title: Improvements in or relating to locking means for the controls of shaft-driven radio components and the like
Inventor: HICKLING HUBERT ROY
IPC: G05G1/10
Filed: 1951-05-09
Abstract: 708,438. Locking rods; coupling elements to shafts. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 28, 1952 [May 9, 1951], No. 10951/51. Classes 80 (2) and (3) A control spindle 5 particularly for a radio component 1 such as a variable condenser or potentiometer is normally locked by a spring- pressed conical member 19 on the adjusting knob 24 engaging a fixed conical member 20. The member 19 has an axially slidable connection 13 14, 15, 16 with the spindle 5 so that depression of the knob against the pressure of the spring 22 releases the frictional locking and allows. the spindle to be freely rotated. In a modified arrangement flat plates with an intermediate friction disc are employed instead of the conical members.
Patent GB-1418398-A (GB)
Title: Apparatus for blow moulding
IPC: B29C49/42
Filed: 1973-03-07
Abstract: 1418398 Extrusion-blow-moulding CARNAUD TOTAL INTERPLASTIC 7 March 1973 [9 March 1972] 11074/73 Heading B5A Blow-moulding apparatus comprises an extrusion head, a plurality of fixed two-part moulds in a ring concentric with the extrusion axis, a duct having one end at the extrusion head to receive tubular extrudate and the other end arranged to deposit the extrudate in successive moulds around the ring, means to rotate the duct around the axis, means to open and close the moulds and means to synchronize mould opening/closing with duct rotation so that the extrudate is deposited in an open mould which closes as soon as the other end of the duct is above the succeeding mould. The duct may be a trough or a tube. As shown in Fig. 1, tubular parison 3 is fed from extrusion head 2 by trough 6 successively into a plurality of moulds 5 fixed on a circular base 4, the upper mould halves being opened/closed by a ram 15. Trough 6 is rotated about extrusion axis x-x<SP>1</SP> by motor 16. A cooling fluid, e.g. air may be supplied to trough 6 through duct 7, collar 8 and duct 7a to provide an air cushion supporting the parison 3 as it passes down the trough, which may also be provided with roller or ball bearings or endless belts. Air is also supplied through duct 12 and head 2 into parison 3. The parison 3 is blow-moulded in moulds 5, e.g. by needles etc., and the moulded articles 9 are ejected into well 10 and through orifice 11, e.g. for delivery to a trimming machine. Mould opening/closing is synchronized with trough rotation by cam 13, rotating with the trough, actuating valves 14 to distribute fluid to rams 15. The trough may be made from a superpolyamide, polytetrafluoro-ethylene or polished steel. The parison 3 is guided into the moulds by a guide member (19, Fig. 3, not shown) and the parison is stretched as it is deposited. The parison tube thickness may be varied by means associated with the extrusion head. Inserts of a different colour or composition may be placed in the mould or supports for imprinting texts or designs on the article.
Patent GB-367621-A (GB)
Title: Improvements in and relating to pocket lighters
IPC: F23Q2/08
Filed: 1931-04-14
Abstract: 367,621. Frictional pocket lighters. THORENS SOC. ANON., H., Ste-Croix, Switzerland. April 14, 1931, No. 11090. Convention date, April 14, 1930. [Class 75 (iii).] To render the lighting of pipes by a pyrophoric pocket lighter easier the wick tube 3 is slidably mounted in a tube 4 in the casing 1 and is formed with rack teeth 5 meshing with a pinion 6 which is operable by the finger so that the wick tube can be raised. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a lighter b on which a cover a having a segmental projection d can be turned rapidly by finger pressure about pivots e to operate through segmental gearing a sparking device for igniting a wick mounted in a slidable tube k. This subject-matter does not appear in the Specification as accepted.
Patent GB-987971-A (GB)
Title: Process for reducing the dimensions of monocrystalline bodies of semiconductor material
IPC: B24B37/00
Filed: 1964-03-17
Abstract: The dimensions of a monocrystalline body of semi-conductor material are reduced by treating in a polishing device in the presence of at least one mechanically active polishing agent and at least one chemically active agent, said agents being supplied and discharged at the same rate.  The polishing agent is in the form of fine grains ten times smaller than those of the layer to be reduced.  The chemical agent is sodium hydroxide.  The bodies are rubbed against a polishing plate.  The process may be carried out in stages, progressively reducing the grain size of the mechanically active agent and the concentration of the chemical agent or increasing the viscosity of one of the agents by adding a high viscosity liquid such as glycol, glycerine, paraffin oil or silcone oil.ALSO:The dimensions of a monocrystalline body of semi-conductor material are reduced by treating in a polishing device in the presence of at least one mechanically active polishing agent and at least one chemically active agent, said agents being supplied and discharged at the same rate. The polishing agent is in the form of fine grains ten times smaller than those of the layer to be reduced.  The chemical agent is sodium hydroxide.  The bodies are rubbed against a polishing plate. The process may be carried out in stages, progressively reducing the grain size of the mechanically active agent and the concentration of the chemical agent or increasing the viscosity of one of the agents by adding a high viscosity liquid such as glycol, glycerine, paraffin oil or silicon oil.
Patent GB-175214-A (GB)
Title: Improvements in and connected with wedding cake postal boxes and the like
IPC: B65D5/38
Filed: 1921-04-18
Abstract: 175,214. Setten, R. S. April 18, 1921. Folding covered boxes.-A wedding-cake postal box is formed of a cardboard shell and a metal inner container adapted to slide endways in the shell, the parts being opened out by hand from collapsed blanks. Fip. 3 shows the collapsed shell. Extensions c<2>, c<3>, Fig. 1, are folded and tucked in the ends of the shell a, and are sealed by adhesive flaps h<2>, h<3> of the postal label h. The metal inner container is bent into tray-shape from a flat blank, perforations assisting the bending, and has a metal lid. An adhesive lining of cardbeard may be placed in the container.
Patent GB-179409-A (GB)
Title: Method of and apparatus for drying textile materials
IPC: F26B13/00
Filed: 1921-04-18
Abstract: 179,409. Krantz, H., [Firm of]. April 18, 1921. Addition to 157,425. Drying fabrics, fibres, yarns, and materials in long lengths.-Relates to the method and apparatus for drying textile materials described in the parent Specification, and consists in a method and apparatus wherein a part of the water in the material is expelled by steam and the remainder by warm air which is forced through the material. As shown in Fig. 2, the fabric is subjected to a steam-jet h and passed through a chamber t which communicates with the atmosphere and with a blower w through openings o, u respectively. The steam and water passing through the fabric is led to an air heater v, and the air supplied to the chamber t is directed over the surface of the fabric by a plate x. Fig. 3 shows a modification, wherein the drying of the fabric is completed upon a perforated drum within a cylinder which communicates with the atmosphere and an air suction pump through openings u, o respectively.
Patent GB-513508-A (GB)
Title: Improvements in or relating to processes and apparatus for the manufacture of primary oxyalkylamines
Filed: 1938-04-12
Abstract: 513,508. Distilling liquids. USINES DE MELLE. April 12, 1938, No. 11251. Convention date, April 16, 1937. [Class 32] [Also in Group IV] Dilute solutions of monoalkylolamines are concentrated by using the vapours emitted during the concentration of one portion to concentrate the succeeding portion, after their pressure and temperature have been increased by adiabatic compression, conveniently in a turbo-compressor, to such an extent that they condense at 5-10‹C. above their normal boiling point. The alkylolamine solution, prepared in B and freed from ammonia in C and D, flows to the heat exchanger E, where it is concentrated up to 10-20 per cent. by heating at 102-103‹C. The resulting vapour is heated to 105‹C. and compressed in the turbo-compressor PT, and passed back to E, along with additional steam, if necessary, to heat the solution. The concentrated solution passes to F where it is rectified, partly by the exhaust steam of the turbine.
Patent GB-1462532-A (GB)
Title: Method for separating oil from water
IPC: B01D11/04
Filed: 1974-03-13
Abstract: 1462532 Separating oil from waste waters MITSUBISHI CHEMICAL INDUSTRIES Ltd KAYABA INDUSTRY CO Ltd and CHEMICAL INDUSTRIES CO Ltd 13 March 1974 [16 March 1973] 11281/74 Heading C1C A method for separating oil from water in waste water containing fats and oils comprises adding paraffinic hydrocarbons with a specific gravity of 0À8 or less and a coagulant, stirring the mixture and removing the oil-containing scum floating on the surface. The preferred hydrocarbon is n-hexane and the preferred coagulant a condensation product of benzaldehyde with poly-alcohols containing 4 or more OH groups. Reference has been directed by the Comptroller to Specification 1,364,942.